The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 2005
Filed:
May. 04, 2004
Joseph F. Elek, Elyria, OH (US);
Jeffrey G. Felty, Elyria, OH (US);
Neil A. Kammiller, Lorain, OH (US);
Dennis F. Knurek, Lakewood, OH (US);
Joseph F. Elek, Elyria, OH (US);
Jeffrey G. Felty, Elyria, OH (US);
Neil A. Kammiller, Lorain, OH (US);
Dennis F. Knurek, Lakewood, OH (US);
Other;
Abstract
A phase controlled drive circuit includes a drive circuit operable to provide gate signals to an SCR bridge circuit and a phase control circuit. The phase control circuit includes a first phase generator operable to generate a first phase signal, and a second phase generator operable to generate a second phase signal. The second phase signal is periodically reset to an initial value. A drive circuit actuator in the phase control circuit is operable to place the drive circuit in a first activation state when a sum of the first and second phase signals exceeds a threshold value, and is further operable to place the drive circuit in a second activation state when the sum of the first and second phase signals is less than the threshold value.